Jim Serowski knew his employees planned to skip work last Thursday.They told him they wanted to participate in "A Day Without Immigrants," the nationwide day of protest. Serowski, founder of JVS Masonry in Commerce City, Colorado, said his position to them was clear:"If you're going to stand up for what you believe in, you have to be willing to pay the price."When Serowski's foreman and some 30 bricklayers failed to show up for work, he fired them all with no regrets, he said.